<span>10 g of hexane has a greater volume than 10 g of toluene.
volume of hexane = 15.27 mL
volume of toluene = 11.53 mL
First, look up the density of hexane and toluene.
hexane = 0.6548 g/mL
toluene = 0.867 g/mL
Since hexane has the lower density, the same mass of hexane will have a higher volume than the same mass of toluene. No need for you to actually calculate the volume for the first part of the question.
However, the 2nd part of the question does require you to calculate the volume. That is a simple matter of division.
volume of hexane = 10 g / 0.6548 g/mL = 15.27 mL
volume of toluene = 10 g / 0.867 g/mL = 11.53 mL</span>
Answer:
2.9 × 10²⁴ atoms Cu; 3.3 × 10²¹ atoms C; 1.44 × 10²⁵ atoms Hg; 9.63 × 10²² atoms Na
Explanation:
To convert moles to atoms, we need a conversion factor: Avogadro's number. There are 6.02 × 10²³ atoms in 1 mole of atoms.
4.9 mol Cu × 6.02 × 10²³ atoms Cu/1 mol Cu = 2.9 × 10²⁴ atoms Cu
5.4 × 10⁻³ mol C × 6.02 × 10²³ atoms C/1 mol C = 3.3 × 10²¹ atoms C
24.0 mol Hg × 6.02 × 10²³ atoms Hg/1 mol Hg = 1.44 × 10²⁵ atoms Hg
0.160 mol Na × 6.02 × 10²³ atoms Na/1 mol Na = 9.63 × 10²² atoms Na
The hydrogen ion concentration is calculated as follows
Ph + POh =14
ph= 14-9.85= 4.15
anti -H+
=anti (-4.15) = 7.07 x10^-5 moles per liter
Answer:
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Explanation:
Answer # Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma.
The area used to be covered by an ocean
